Ilyn is a distinctive girls' name in United States, ranking #15018 in 1998 with 5 recorded births. This places Ilyn in the bottom 10% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2010 with 8 births ranking #12742. In 1998, approximately 1 in every 353,378 girls born was named Ilyn. STABLE Recent data shows the name is currently stable.